|Numéro de publication||US6935870 B2|
|Type de publication||Octroi|
|Numéro de demande||US 10/090,956|
|Date de publication||30 août 2005|
|Date de dépôt||5 mars 2002|
|Date de priorité||5 mars 2001|
|État de paiement des frais||Payé|
|Autre référence de publication||CN1269265C, CN1374719A, DE60200559D1, DE60200559T2, EP1239552A1, EP1239552B1, US20020123254|
|Numéro de publication||090956, 10090956, US 6935870 B2, US 6935870B2, US-B2-6935870, US6935870 B2, US6935870B2|
|Inventeurs||Nobukazu Kato, Koji Hayashi, Kazushi Kamata, Michitaka Ono|
|Cessionnaire d'origine||Japan Aviation Electronics Industry, Limited|
|Exporter la citation||BiBTeX, EndNote, RefMan|
|Citations de brevets (14), Citations hors brevets (1), Référencé par (42), Classifications (14), Événements juridiques (3)|
|Liens externes: USPTO, Cession USPTO, Espacenet|
This invention relates to a connector comprising a plurality of contact arrays and, in particular, to a connector suitable for high-speed differential signal transmission.
At first, high-speed differential signal transmission will be described. The high-speed differential signal transmission has two types of transmission modes, i.e., an unbalanced (single-end) type and a balanced (differential) type. The single-end type is a mode in which a high level and a low level of a digital signal are distinguished by the potential difference between a ground line and a signal line, and is generally used so far. On the other hand, the differential type is a mode in which two signal lines (+, −) are used and the high level and the low level are distinguished by the potential difference between the two signal lines. In the differential type, two signals on the two signal lines are equal in voltage level to each other and different in phase by 180° from each other. As compared with the single-end type, the differential type assures reliable transmission because noise produced in the two signal lines is canceled at the receiver input.
Besides, there is another transmission mode according to TMDS (Transition Minimized Differential Signaling). The TMDS is a standard for exchange of image data between a PC main body and a display monitor, and is a mode in which data transmission is performed by the use of two signal lines (+, −) and a single ground line.
In an existing connector comprising signal contacts and ground contacts, use is made of a structure in which the signal contacts and the ground contacts are faced to each other in a grid-like pattern or a structure in which the ground contacts are partially skipped. In the former structure, the number of contacts is increased so that miniaturization of the connector is difficult. In the latter structure, the high-frequency characteristics of the connector are considerably degraded.
At present, transmission of high-speed differential signals is required in a growing number of software applications. Under the circumstances, there is a demand for a connector having a compact size, a low price, and excellent high-frequency characteristics.
It is therefore an object of this invention to provide a connector which is compact in size, low in price, and excellent in high-frequency characteristics.
Other objects of the present invention will become clear as the description proceeds.
According to one aspect of this invention, there is provided a connector comprising a plurality of contact arrays parallel to one another, each of the contact arrays including two signal contacts adjacent to each other and a ground contact aligned with the signal contacts, the ground contact in each contact array being disposed at a position corresponding to an intermediate position between two signal contacts adjacent to each other in a next contact array.
According to another aspect of this invention, there is provided a connector comprising first and second contact arrays parallel to each other and a third contact array between the first and the second contact arrays, each of the first and the second contact arrays including a plurality of signal contacts, the third contact array including a plurality of ground contacts, each of the ground contacts being disposed at a position corresponding to an intermediate position between every adjacent ones of the signal contacts in each of the first and the second contact arrays.
According to still another aspect of this invention, there is provided a connector for high-speed differential signal transmission, the connector comprising a plurality of + signal contacts, a plurality of − signal contacts, and a plurality of ground contacts, the contacts being arranged in a manner such that a set of each single one of the + signal contacts, each single one of the − signal contacts, and each single one of the ground contacts are located at three apexes of an isosceles triangle, respectively.
At first referring to
The connector illustrated in the figures is a receptacle connector 1. As illustrated in
As illustrated in
The receptacle shell 3 has an upper surface provided with a pair of springs 3A. The springs 3A are adapted to be engaged with a plug connector 6 illustrated in
The plug shell 8 has an upper surface provided with a pair of holes 8A. The holes 8A are adapted to be engaged with the springs 3A of the receptacle connector 1, respectively.
Next referring to
The connector illustrated in the figures is a receptacle connector 11. As illustrated in
As illustrated in
The plug shell 18 has an upper surface provided with a pair of springs 18A. The springs 18A are adapted to be engaged with the holes 13A of the receptacle connector 11, respectively.
Next referring to
The connector illustrated in the figures is a receptacle connector 21 of a SMT (Surface Mount) type. As illustrated in
As illustrated in
As illustrated in
As illustrated in
As illustrated in
In each of the above-mentioned connectors, the plug connector with the transmission cables connected thereto is fitted to the receptacle connector mounted to the printed board. Each of the signal contacts S, the ground contacts G, and the ordinary contact D may be of a surface-mount type or a through-hole type.
The upper-array and the lower-array ground plates 32 and 33 are provided with lead portions 32B and 33B to be contacted with or soldered to the ground contacts G, respectively. The upper-array and the lower-array ground plates 32 and 33 are faced to each other with the lead portions 32B and 33B alternately arranged. In this manner, the lead portions 32B and 33B can be connected to the ground contacts G arranged in a staggered fashion and located at the apexes of the isosceles triangles.
As illustrated in
As illustrated in
The contacts 36 are arranged in two rows on the receptacle connector 1. In this condition, the pitch is relatively small or narrow on the receptacle connector 1. The contacts 36 may be connected to an electric circuit of the circuit board by inserting the contacts 36 in through holes 37 formed in the circuit board. In this event, the through holes 37 can be arranged in three or more rows. In case where the through holes 37 are arranged in three or more rows, it becomes possible to make the pitch of the through holes 37 be relatively large or widen the pitch on the circuit board. This results in pitch conversion between the contacts 36 and the through holes 37.
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|Classification aux États-Unis||439/108, 439/941, 439/607.01|
|Classification internationale||H01R24/00, H01R13/658, H01R13/648|
|Classification coopérative||Y10S439/941, H01R13/6585, H01R13/6471, H01R13/65807, H01R23/688|
|Classification européenne||H01R23/00B, H01R13/658E, H01R23/68D2|
|5 mars 2002||AS||Assignment|
Owner name: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, JAPA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KATO, NOBUKAZU;HAYASHI, KOJI;KAMATA, KAZUSHI;AND OTHERS;REEL/FRAME:012672/0945;SIGNING DATES FROM 20020218 TO 20020219
|28 janv. 2009||FPAY||Fee payment|
Year of fee payment: 4
|30 janv. 2013||FPAY||Fee payment|
Year of fee payment: 8